期刊
ENVIRONMENTAL POLLUTION
卷 153, 期 2, 页码 362-368出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2007.08.024
关键词
phytoremediation; hyperaccumulator; heavy metals; mine tailings; desert broom
资金
- NIEHS NIH HHS [R01ES11367-01, R01 ES011367] Funding Source: Medline
- NIGMS NIH HHS [S06 GM008012-330017, S06 GM008012, S06GM8012-33, S06 GM008012-33] Funding Source: Medline
- PHS HHS [26-8600-29] Funding Source: Medline
The metal concentrations in a copper mine tailings and desert broom (Baccharis sarothroides Gray) plants were investigated. The metal concentrations in plants, soil cover, and tailings were determined using ICP-OES. The concentration of copper, lead, molybdenum, chromium, zinc, arsenic, nickel, and cobalt in tailings was 526.4, 207.4, 89.1, 84.5, 51.7, 49.6, 39.7, and 35.6 mg kg(-1), respectively. The concentration of all elements in soil cover was 10-15% higher than that of the tailings, except for molybdenum. The concentration of copper, lead, molybdenum, chromium, zinc. arsenic, nickel, and cobalt in roots was 818.3, 151.9, 73.9, 57.1, 40.1, 44.6, 96.8, and 26.7 mg kg(-1) and 1214.1, 107.3, 105.8, 105.5 55.2. 36.9, 30.9. and 10.9 mg kg(-1) for shoots, respectively. Considering the translocation factor, enrichment coefficient, and the accumulation factor. desert broom could be a potential hyperaccumulator of Cu, pb, Cr, Zn, As, and Ni. (C) 2007 Elsevier Ltd. All rights reserved.
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